Tailor s crayon-sharpening machine



(Model.) H. L. HALVERSON.

Y T'AILORS GRAYON SHARPBNING MACHINE. No. 372,315. Patented Nev. 1, 1887. @l .f3.4

"mnuwnnimamn wfme'ses: l Invezbi? fff N. PETERS. PhmnLilhogrzyher. Washington, D4 C.

UNITED STATES PATENi` OEErcEo HALBERT L. HALVERSON, OF WHITEVVA'IER, WISCONSIN.

TAI'LORS CRAYON-SHARPENING MACHINE.

SPECIFICATION forming part of Letters Patent No. 372,315, dated November 1, 1887.

Application tiled January E25, 1886. Serial No. 189,712. (Model.)

To all whom it may concern.-

Be it known that I, HALBERT L. HALVER- soN, a citizen of the United States, residing at the city of Whitewater, in the county of Walworth and State of Wisconsin, have invented a newl and useful Machine Afor Sharpening Tailors Crayons, of which the following is a specification.

My invention relates to improvements in 1o machines for sharpening tailors crayons; and the objects of my improvements are, first, to sharpen evenly. both sides of the crayon at the same time; second, to aftord facilities for adjusting the sharpening-knives; third, to remove and confine the dust. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure l is a top view of the machine. Fig. `2 is a vertical section of the entire machine. 2c Fig. 3 is a vertical view-of the knives in po sition for use. Fig. et is a side view of the machine. Fig. 5 is a vertical view of the machine on the line a in Fig. l.

Similar letters refer to similar parts in the several views. j

The box r, with drawer s, constitutes the standard of the machine. At the top of the box r, and opening above the drawer s, is-an opening corresponding to the hollow tube lc. 3o The base or flange g ofthe cutter is connected to the boX r by screws e. rIhe hollow tube k receives the dust from the sharpened crayons through the holes or conductsnnimmediately beneath and in front of the knives m m.

d is a triangular groove, from theinner surface of which project the cutting-knives m m. The knives m m rest in slots opening into the groove d, and are adjusted by screws c c behind them in the cutter-head, in which threads are cut to receive them. The knives m m are retained in position by the yset-screws b b.

The edges of the knives m m are sharpened to correspond with the sides of the triangular groove d. The knives are inserted in the slots made for their reception, their edges adj usted, as desired, beyond the plane of the sides of the groove d by means ofthe screws c c, and then fastened into position bythe set-screws b b. The crayon is drawn against the edges of the l knives m m, guided and held in place by groove 5o d, and the dust drops of its own weight through the holes n n, the tube k, into the drawer s.

The machine may be made of different parts and of any appropriate material, but preferably of brass cast in one piece.

I claim as my invention- In a machine for sharpening tailors crayons, the trough or chalkguide having two or more knives or cutters protruding into said guide from opposite sides, in combination with a post supporting said guide and cutters, said supporting-post having two or more holes or conducts passing rdown through its sides, one hole for each cutter, the upper portion of said holes or conducts to bejust in front of each cutter, and the lower end to terminate in orifices part way down the sides of the post to convey the cuttings from the cutters and prevent their being clogged.

HALBER'I L. HALVFRSON.

Witnesses:

PITT CEAVATH, MINER G. HALvERsoN. 

